/*
 * Copyright (c) 2008, Jochen Mader, Tareq Doufish, Andreas Blochberger
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * - Redistributions of source code must retain the above copyright notice, 
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, 
 *   this list of conditions and the following disclaimer in the documentation 
 *   and/or other materials provided with the distribution.
 * - Neither the name of Monklypse nor the names of its contributors may be 
 *   used to endorse or promote products derived from this software without 
 *   specific prior written permission.
 *   
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 */
package org.monklypse.core;

import java.util.concurrent.Callable;

import com.jme.system.canvas.JMECanvasImplementor;
import com.jme.util.GameTaskQueue;

/**
 * Generic implementor that knows the canvas it is bound to.
 * 
 * @author Jochen Mader - jochen@pramari.com - Sep 10, 2008
 * 
 */
public abstract class JMECanvasImplementor2<F> extends JMECanvasImplementor {
	/**
	 * Task queue for update tasks.
	 */
	protected GameTaskQueue update;
	/**
	 * Task queue for render tasks.
	 */
	protected GameTaskQueue render;
	/**
	 * The canvas this implementor is associated with.
	 */
	protected F canvas;

	/**
	 * Constructor.
	 */
	public JMECanvasImplementor2() {
		super();
		update = new GameTaskQueue();
		render = new GameTaskQueue();
	}

	/**
	 * @return the canvas
	 */
	public F getCanvas() {
		return this.canvas;
	}

	/**
	 * @param canvas
	 *            the canvas to set
	 */
	public void setCanvas(F canvas) {
		this.canvas = canvas;
	}

	/**
	 * Enqueue a callable for update. As we are in eclipse we don't get a future as it's not
	 * trivial to wait on it.
	 * 
	 * @param callable
	 */
	public void update(Callable<Object> callable) {
		update.enqueue(callable);
	}

	/**
	 * Enqueue a callable for rendering. As we are in eclipse we don't get a future as it's not
	 * trivial to wait on it.
	 * 
	 * @param callable
	 */
	public void render(Callable<Object> callable) {
		render.enqueue(callable);
	}

	/* (non-Javadoc)
	 * @see com.jme.system.canvas.JMECanvasImplementor#resizeCanvas(int, int)
	 */
	@Override
    public void resizeCanvas(int width, int height) {
        final int fWidth = width <= 0 ? 1 : width;
        final int fHeight = height <= 0 ? 1 : height;
        Callable<?> exe = new Callable<Object>() {
            public Object call() {
                if (renderer != null)
                    renderer.reinit(fWidth, fHeight);
                return null;
            }
        };
        render.enqueue(exe);
    }

	/**
	 * @return the update
	 */
	public GameTaskQueue getUpdateQueue() {
		return this.update;
	}

	/**
	 * @return the render
	 */
	public GameTaskQueue getRenderQueue() {
		return this.render;
	}

}
